G/TBT/N/USA/1721  
20 April 2021  
(21-3321) Page: 1/2 
Committee on Technical Barriers to Trade  Original:  English  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member:  UNITED STATES OF AMERICA   
If applicable, name of local government involved (Article 3.2 and 7.2):   
2. Agency responsible:  Federal Aviation Administration (FAA) [1750]  
Name and address (including telephone and fax numbers , email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated i f different from above:   
Please submit comments to: USA WTO TBT Enquiry Point, Email: usatbtep@nist.gov  
3. Notified under Article 2.9.2 [   ], 2.10.1 [   ], 5.6.2 [   ], 5.7.1 [   ], other  [X]:  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  Boeing 
model 737 -8 and 737 -9 airplanes; fuel quantity processor unit; Aircraft and space vehicles 
in general (ICS 49.020), Aerospace electric equipment and systems (ICS 49.060), On -
board equipment and instruments (ICS 49.090)  
5. Title, number of pages and language(s) of the notified document:  Airworthiness 
Directives; The Boeing Company Airplanes (3 page(s), in English)  
6. Description of content:  Notice of proposed rulemaking - The FAA proposes to adopt a 
new airworthiness directive (AD) for certain The Boeing Company Model 737 -8 and 737 -
9 airplanes. This proposed AD was prompted by a report that during refueling of the right  
main tank, if there is a failure of the automatic shutoff system, the refueling panel does 
not provide the required indication that the automatic shutoff has failed. This proposed 
AD would require installing a new fuel quantity processor unit (FQPU) and d oing a FQPU 
software check. The FAA is proposing this AD to address the unsafe condition on these 
products.  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Protection of human health or safety  
8. Relevant documents:   
86 Federal Register (FR) 17324, 2 April 2021; Title 14 Code of Federal Regulations 
(CFR) Part 39:    
https://www.govinfo.gov/content/pkg/FR -2021-04-02/html/2021 -06726.htm  
https://www.govinfo.gov/content/pkg/FR -2021-04-02/pdf/2021 -06726.pdf  
This notice of proposed rulemaking is identified by Docket Number  FAA-2021-0017. The 
Docket Folder is available on Regulations.gov  at 
https://www.regulations.gov/docket/FAA -2021-0017/documen t and provides access to 
primary and supporting documents as well as comments received. Documents are also 
accessible from Regulations.gov  by searching the Docket Number. WTO Members and 
their stakehol ders are asked to submit comments to the USA TBT Enquiry Point . G/TBT/N/USA/1721  
 
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  Comments received by the USA TBT Enquiry Point from WTO Members and their 
stakeholders will be shared with the regulator and will also be s ubmitted to the Docket  
on Regulations.gov if received within the comment period.  
9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  To be determined  
10. Final date for comments:  17 May 2021  
11. Texts available from:  National enquiry point [ ] or address, telephone and fax 
numbers and email and website addresses, if available , of other body:   
https://members.wto.org/crnattachments/2021/TBT/USA/21_2844_00_e.pdf